Imam Hafiz Gul Muhammad talks about the beauty of sending salutations on the Messenger of Allah sal Allahu 'alayhi wa aalihi wa sallam.
Almighty Allah says: "Surely Allah and His Angels send blessings on the Holy Prophet (Sallal Laahu Alaihi Wasallim). O you who believe! Send Blessings (Durood) and Salutations (Salaams) on the Prophet with worthy Salutation".(Surah al-Ahzab: 56)
It has also been narrated by Ahmad and others on the authority of Abu Talha al-Ansari that The Messenger of God (Sallallahu Alaihi Wa Aalihi Wa Sallam) came one day with a smile on his noble face. So we said, 'O Messenger of God we see a smile on your face!' He said, 'An Angel approached me and told me, 'O Muhammad, will it please you [to know] that God says that nobody sends prayers upon you from your community except that I send ten prayers upon him. Neither does anybody from your community send blessings upon you except that I send ten blessing upon him?' So the Prophet said, 'Indeed,' meaning 'it please me.'"
Tirmidhi and Ibn Hibban in his Sahih state on the authority of Ibn Masud that the Messenger of God (sallallahu alaihi wa sallam) said, "The most worthy people of me on the Day of Judgment will be those who sent the most prayers upon me."
"The Messenger of God said, 'Who supplicates: 'O God send prayers upon Muhammad and grant him a rank near You', my intercession for him will become obligatory upon me on the Day of Judgment."(Tabrani)
Ibn Abi Shayba, Abu al-Shaykh, and others relate on the authority of Abu Hurayra saying, "The Messenger of God (Sallallahu Alaihi Wa Sallam) said: "Send prayers upon me, for prayers upon me are a purification for you."
Al-Daylami has reported in his chain of transmission on the authority of Ibn Umar, that the Prophet (sallallahu alaihi wa sallam) said, "Ornament your gatherings with prayers upon me. For, prayers upon me are a light for you on the Day of Judgment."
Al-Tirmidhi relates on the authority of Ibn Masud saying, "The Messenger of God (sallallahu alaihi wa sallam) said, 'The most worthy people of me on the Day of Judgment are those who used to send the most prayers upon me." Ibn Hibban has also transmitted this in his sahih.
Nabi Muhammad (sallal laahu alaihi wasallam) said, "Increase your recital of the Durood Shareef on the days and nights of Jummah. I will be a witness and intercessor on the Day of Qiyamah for that person who does so". (Jaami'us Sagheer)
Sayyiduna Rasoolullah (sallal laahu alaihi wasallam) said, "Without doubt, that person who has read the most amount of Durood Shareef will be able to transcend the stages of difficulty and anxiety on the Day of Qiyamah as quickly as possible". (Shifa Shareef)
Anyone who recites Durood upon me 3 times in the day and 3 times in the night due to love and devotion for me, Allah Almighty will forgive the sins he committed during that day and night. [At'Targheeb Wat'Tarheeb, Vol2, Pg 328]
Muslim and the companions of the Sunan report on the authority of Abu Hurayra that the Messenger of God (sallallahu alaihi wa sallam) said, "Whoever sends one prayer upon me, God sends upon him ten."